Answer:
D) RNA or DNA
Explanation:
Most viruses either have RNA or DNA as their genetic material.
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Explanation:
the action or process of fertilizing an egg involving male and female gamete to form zygote is fertilization. fertilization result in zygote.
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Answer
d.crust
Explanation
because he covered the layer of the earth
Ans.
Sex-linked genes are those genes that found on sex-chromosomes (X and Y chromosomes) and their phenotypic expression for a trait depends on the gender of the offspring.
Most of the sex-linked genes are present on X chromosomes as X chromosomes have more number of genes as they are made up of more DNA as compared to Y chromosome.
However, male individuals are more likely to exhibit the sex-linked traits. It is because most of the sex-linked traits are recessive and males have only one copy of X chromosome, while females have two copies of X chromosome. One mutated copy in male can exhibit the trait, while in females, both of the mutated copies are required to exhibit that trait.
